Electrical condenser



April 7, 1925..

C. H. THORDARSON ELECTRICAL .CONDENSER Filed MaICh 3l, 1920 I l i l 1 1l I i i i l Patented Apr. 7, 1925.

maar@ PATENT Vorifice.

CHESTER I-I. TI-IORCDA-RSON, OFVCHICAGO, ILLINOIS.

ELECTRICAL CONDENSER.

Application led March 31, 1920. Serial No. 370,061.

To aZZ- whom t may concern.'

Be it-known that I, CHESTER H. THORDAR- soN, a citizen o f the UnitedStates, and a resident of Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inElectrical Condensers; and I do hereby declare thatthe following is afull, clear, and eX- act description thereof, reference being had 0 tothe accompanying drawings, and to the characters of reference markedthereon, which form a part of this specification.

This invention relates to improvements in electrical condensers designedmore particularly for high tension currents of that type that isconstructed and, adapted to be cooled by immersing the same in a body ofcooling oil or like cooling medium.

Among the objects of the invention is to provide a novel form ofcompound conducting and spacer elements between the dielectric elementsso constructed and arranged that thereby the conducting and dielectricelements may be kept cool by the flow of'a cooling medium over and aboutthe surfaces thereof, the conducting elements being such as to providefor a large and free distribution of the cooling medium over or incontact with the surfaces thereof.

Another object of the invention is to provide a construction of thespacing and conducting' elen'ients by which theV condenser structure asa whole is resiliently braced against deformation under mechanicalstresses, and `whereby the dielectric elements' are protected againstrupture by electrostatic stresses. Y

Other objects of theinvention are to otherwise improve and simplify thecondenser structure, and the invention consists of the combination andarrangement'of the parts shown in the drawings Aand described in thevspecification, and is pointe-d out in the appended claims.V

In the drawings: A Figure l is a perspective view of an eleciricalcondenser embodying my invention. Figure 2 lis a vertical sectionthereof showing the outline ofthe casing to lhold the oil in which thecondenser structure is adapted to be submerged.

Figure 3 is a top plan view-of the condenser, with Vparts broken away.

Figure 4 is an enlarged detail showing one of the conducting elements ofthe condenser.

Figure 5 is a detail view showing a modification of the conductingelement. As shown in the drawings, 10 `and 15 designate respectively thespacing and conducting elements of the condenser, and 11-11 Vdesignatethe dielectric elements interposed therebetween. The condenser as awhole is contained in a casing 12,V shown in dotted outline in Figures 2and 3, the casing being of such forni and dimensions as to closelyreceive the condenser and to contain a sufficient body of cooling mediumfor cooling the condenser.

The dielectric elements 11 consist, yas herein shown of plain or. flat.sheets and may be made of any suitable insulating material, such asmica, fibre, or the like, and are of sufiicientlygreater vertical lengthand transverse width than the spacing and conducting elements as toproject at both ends and at the/sides beyond said latter elements toavoid leakage around the edges of the dielectric elements.

The conducting elements are characterized in part by the flat sheets .15that lie against the flat faces of the dielectrics and in part by thesheets 10 of longitudinally corrugated or wavy cross section so arrangedas to form at the sides thereof throughout the length of the sheets upand down passages. for the ii'owof a cooling medium, as oil.

i The outer curves of the intermediate corrugated elements contact withthe flat inner faces of the exterior elements 15. The said flat platesor elements maybe curved at vtheir side edges toward each other as shownat '16 (Figure 4t) so that the compound spacing and conducting elementscomprise an elongated tube open at top and bottom, of which the sheetsor elements 15-15 are the side Walls and the intermediate elements 10between them, in the wave-likek or corrugated structurev are bracingelements. In this arrangement there are formed between the intermediateand outer elements unobstructed vertical channels 17-17 through whichthe cooling medium can iiow for contact with the faces' of all of theelements.

ln the construction shown in Figure 5, a

single sinuons wave-like element 18 is arranged between adjacent pairsot dielectric eleinents to lorin the oil passages 17 between the singleconductor eleinent and the. adjacent dielectric elements. y

The said condenser structure is bound together between flat sheetinsulating elenients 19-19 that inay be inade oi wood, fibre', or thelike; and tie-bolts 20-20 extend transversely through the said eleinents19 above and below Vthe conducting eleinents ot the condenser and tiesaid parts together. The conlining 'l'ran'ie thus constructed mayinclude also upper and lower transverse angle bars 21, 22 which liealong the outer faces oit the insulating elements 19 near theii` upperand lower ends, and side channel bars 23 which lie outside oli and overtheI vertical webs ot the angle bars, terminating in abutting relationto the lateral ilange ot the angle bars. rl`he tie bolts 2O extendthrough said angle and channel bars, with their hards and nuts bearingon the webs ot the channel bars so as to thereby clainp the elements ofthe. assembled structure in lixed relation to each other againstmechanical stresses. The said tie bolts are surrounded by or extendthrough insulating slee-ves 20 which are partially contained inparti-cylindric or other shaped notches in the upper and lower edges otthe dielectric eleinents so as to constitute ineans for holding saiddielectric elenients both t'roin vert-ical and lateral shitting. Theflanges ot the angle and channel inenibers 22, 2?) are o't suolidimensions as to closely tit in the casing 12 t'o hold the condenserstructure lirinly therein and to avoid vibration of the condenserstructure.

.2S-25 Vdesignate insulating mounting plates tor terniii'ial rods 26 and2T oli the concha-.ting elen'ients ot opposite polarity. The saidmounting plates are in vertical alignment with the contining insulatingpla or inei'nbers 19 and are attached to the Ytraine structure by screws28 that pass through the angle bars above relerred to. The saidterininal rods extend between, and through openings in, the mountingplates, and are threaded at their ends` outside ot their mounting platestol constitute at their ends binding posts tor the circuit wires. Eachoit said tern'iinal rods 26--27v is connected to alternate conductingelements by ineans ot conducting hooks 2li-30,'which hoohs lit over saidrods and engage openings therein in the inanner shown in Figure 17 andthe Shanks ot said hooks are flattened, and as indicated in dotted linesin Figure 4;, so asto enter the conduits 17 lfor oil :tlow and arethereby in contact with said conducting and spacing eleinents. Thus itwill he seen that the terminal rods 26, 2T are connected through saidhooks 29, 30 to alternate conducting eleiuents ol the condenserstructure. The conducting hooks, connected as they are to saidconducting eleinents and the terniinal rods, enable said hooks to bereadily renioved and replaced so as to thereby vary the active capacityoi? the condenser.

lVith the construction described it will be observed that the conductingand spacing eleinents are so related to the dielectric eleinents thatthere is 'lforined aniple passage way for the cooling niediun'i iiiorcontact with the 'ull faces ot the conducting and spacing eleinents anddielectric elenients, whereby the condenser structure inay be keptsuitably cooled'. `.Vhile capable o't large and varied capacities, itwill be i'urtherniore noted that the construction is such that thedielectric and conducting eleinents are inutually pressed together so asto produce a very rigid structure' and avoid buckling thereof underheavy electrical stresses. It will also be observed that theconstruct-ion and arrangement ot the conipound conducting and spacingelements shown is such as to greatly increase. the capacity o't thecondenser to adapt it to high tension currents.

l cla'ini as' my invention:

1. An electrical condenser comprising interleaved dielectric andconducting eleinents, the conducting elements being 'formed of tube-likestructures havingl side inenibers `for contact with the dielectricelements and. with intermediate curved ineinbers.

2. Ani electrical condenser comprising interleaved dielectric andcoinpound conduct-ing elements, the conducting eleinents embracingwave-like transverse torinations to provide at the sides thereot'passages tor a cooling liquid, and tlat inenibers between saidformations and the dielectric elements.

An electrical condenser comprising interleaved dielectric and conductingand spacing elelnents including sheets that lie against said dielectricelements and vertically corrugated elements between and lying with theircouverY 'faces against said sheets. the side margins oli said sheetsbeing curved towards cach other.

11. An electrical condenser comprising interleaved dielectric andconducting eleinents, thel conducting` elen'ients being` ot wave-liketransverse Alorination to provide at the sides thereof passages for acooling liquid, said dielectric elenients extending transversely andlongitudinally beyond the margins ot the conducting eleinents, nieans'for tying` the structure together, combined with Ineans to interlockwith the dielectric eleinents to hold theln iiroln inovenient in theirplanes.

5. An electrica-l condenser conuarising interleaved dielectric andconducting elcinents, the conducting elements being verticallycorrugated to provide at the sides thereoi1 passages for a coolingliquid, terminal rods supported on said structure and hooks engagingsaid rods and adapted to extend at their ends into said cooling mediumpassages for contact with said conducting elements.

6. An electrical condenser comprising interleaved dielectric andconductingy elements, the conducting elements being of wave-liketransverse formation to provide at the sides thereof passages for acooling liquid, insulating plates at the end of the structure andattached thereto, terminal rods extending between and supported on saidinsulating plates, and hooks engaging said rods and extending at theirends into said passages for Contact with said conducting elements.

7. In an electrical condenser a conducting, spacing and cooling channelAunit including conducting sheets adapted to lie against opposeddielectric elements and corrugated sheets between and lying With theirconvex surfaces against said sheets.

In Witness whereof I claim'the foregoing as my invention, I hereuntoappend my signature this 18th day of March, 1920.

CHESTER H. TI-IORDARSON.

